Hi Everyone,
I have a weird problem with IPTables which I think might be
related to something the vif-bridge script is doing.
IPTables wont start, the following non descript error is
given (Line 3 is “*filter”):
Applying iptables firewall rules: iptables-restore v1.3.5:
iptables-restore: una'le to initializetable 'filter
Error occurred at line: 3
Try `iptables-restore -h' or 'iptables-restore --help' for
more information.
[FAILED]
IPTables wont accept even the most basic of config files.
The trouble is I think the Xen script is adding additional
rules that are not in /etc/sysconfig/iptables. /var/log/messages shows the
following:
Oct 8 09:29:59 mrtickle logger:
/etc/xen/scripts/vif-bridge: iptables -A FORWARD -m physdev --physdev-in
vif1.1 -j ACCEPT failed. If you are using iptables, this may affect
networking for guest domains.
Is this likely the cause of iptables not starting? That rule
is not in my iptables config file, all network scripts in xend-config.sxp are
commented out so I assume it must run the script when I start a VM?
My config is eth0 -> wanbr bridge
Eth1 -> lanbr bridge
Eth2 -> Dom0Lan
Eth3 -> Dom0Wan
Eth4 – Unused
Eth5 – Unused
Ib0 – Used for Live migration and DRBD disk
replication
I only want IPTables to run on Eth3. The current config
works and both bridges work within HVMs, I just can’t start IPTables,
below is my IPTables config file which I think is OK since the Xen server’s
near identical partner (Only different IPs and hostname) work fine with the
same config file:
# Firewall configuration written by
system-config-securitylevel
# Manual customization of this file is not
recommended.
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
:RH-Firewall-1-INPUT - [0:0]
-A INPUT -j RH-Firewall-1-INPUT
-A FORWARD -j RH-Firewall-1-INPUT
-A RH-Firewall-1-INPUT -i lo -j ACCEPT
-A RH-Firewall-1-INPUT -i ib0 -j ACCEPT
-A RH-Firewall-1-INPUT -i eth0 -j ACCEPT
-A RH-Firewall-1-INPUT -i eth1 -j ACCEPT
-A RH-Firewall-1-INPUT -i eth2 -j ACCEPT
-A RH-Firewall-1-INPUT -i wanbr -j ACCEPT
-A RH-Firewall-1-INPUT -i lanbr -j ACCEPT
-A RH-Firewall-1-INPUT -p icmp --icmp-type any -j
ACCEPT
#-A RH-Firewall-1-INPUT -p 50 -j ACCEPT
#-A RH-Firewall-1-INPUT -p 51 -j ACCEPT
#-A RH-Firewall-1-INPUT -p udp --dport 5353 -d
224.0.0.251 -j ACCEPT
#-A RH-Firewall-1-INPUT -p udp -m udp --dport 631 -j
ACCEPT
#-A RH-Firewall-1-INPUT -p tcp -m tcp --dport 631 -j
ACCEPT
-A RH-Firewall-1-INPUT -m state --state
ESTABLISHED,RELATED -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp
-p tcp --dport 45022 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp
-p tcp --dport 5900:6000 -j ACCEPT
-A RH-Firewall-1-INPUT -j REJECT --reject-with
icmp-host-prohibited
COMMIT
Any clues to a fix would be much appreciated.
Rob
